<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .row {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            grid-template-rows: 100px;
            grid-auto-flow: row;
            grid-auto-rows: 100px;

        }

        .row div {
            background-color: skyblue;
            box-sizing: border-box;
            border: 1px solid red;
        }

        .row .col-1{
            grid-area: auto / auto / auto / span 1;
        }
        .row .col-2{
            grid-area: auto / auto / auto / span 2;
        }
        .row .col-3{
            grid-area: auto / auto / auto / span 3;
        }
        .row .col-4{
            grid-area: auto / auto / auto / span 4;
        }
        .row .col-5{
            grid-area: auto / auto / auto / span 5;
        }

        .row .col-6{
            grid-area: auto / auto / auto / span 6;
        }

        .row .col-7{
            grid-area: auto / auto / auto / span 7;
        }

        .row .col-8{
            grid-area: auto / auto / auto / span 8;
        }

        .row .col-9{
            grid-area: auto / auto / auto / span 9;
        }

        .row .col-10{
            grid-area: auto / auto / auto / span 10;
        }

        .row .col-11{
            grid-area: auto / auto / auto / span 11;
        }

        .row .col-12{
            grid-area: auto / auto / auto / span 12;
        }
    </style>
</head>
<body>
<div class="row">
    <div class="col-11">1</div>
</div>
</body>
</html>
